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A pump having a solid piston, or plunger, for drawing and forcing a liquid, as water, through the valves; in distinction from a pump having a bucket, or valved piston.

pe, a pipe for supplying the boiler of a steam engine, etc., with water. -- Feed pump, a force pump for supplying water to a steam boiler, etc. -- Feed regulator, a device for graduating the operation of a feeder. Knight. -- Feed screw, in lathes, a long screw employed to impart a regular motion to a tool rest or to…

The solid piston of a force pump; the instrument by which water is forced in a pump.

g a crank on a shaft, or for drawing off a car wheel from the axle. -- Forcing pump. See Force pump (b).